Chapter 1, Problem 1.41P

A heat exchanger wall consists of a copper plate 2 cm thick. The heat transfer coefficients on the two sides of the plate are 2700 and $\text{7000 }\text{W}/\left({\text{m}}^{\text{2}}\text{K}\right)$, corresponding to fluid temperatures of 92 and 32°C, respectively. Assuming that the thermal conductivity of the wall is $\text{375 }\text{W}/\left(\text{m K}\right)$, (a) compute the surface temperatures in °C and (b) calculate the heat flux in ${\text{W/m}}^{\text{2}}$.